Jamb-brick.



No. 798,779. PATENTED SEPT. 6, 1905. A. GEARY. JAMB BRICK.

APPLICATION FILED FEB.13. 1905.

UNITED STATES PATEN T UFFICE.

ALEXANDER GEARY, OF HARRISBURG, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO GEORGE VAN GILDER, OF HARRISBURG, PENNSYLVANIA.

JAMS-BRICK.

Specification of Letters Patent.

Patented Sept. 5, 1905.

Application filed February 13, 1905. Serial No. 245,435.

To all whom it may concern:

Be it known that I, ALEXANDER GEARY, a citizen of the United States of America, residing at Harrisburg, in the county of Dauphin and State of Pennsylvania, have invented certain new and useful Improvements in Jamb- Bricks, of which the following is a specification.

This invention relates to steam-boiler furnaces, and particularly to a portion thereof to be termed the jamb-brick.

An object of this invention is to produce a novel device which is designed to be interposed between the meeting ends of the arches of a boiler-furnace to act as a key for the two arches, whereby the said arches are suspended.

A further object of this invention is to provide means for permitting a circulation of air through the jamb-brick and in providing a device of this character which will prove unusually durable in that it will outlast the clay bricks or bricks of other material than that of metal.

Furthermore, an object of this invention is to provide novel means for permitting the ends of the arches to rest on the brick in a manner to insure tight joints between the jamb-brick and the arches.

Finally, an object of this invention is to produce a device of the character noted which will possess advantages in points of efficiency, simplicity, and inexpensive construction.

IVith the foregoing and other objects in view the invention consists in the details of construction and in the arrangement and combination of parts to be hereinafter more fully set forth and claimed.

In describing the invention in detail reference will be had to the accompanying drawings, forming part of this specification, wherein like characters denote corresponding parts in the several views, in which Figure 1 is a view in elevation of a boilerfurnace, showing the jamb-bricks applied. Fig. .2 is a perspective view illustrating the invention. Figs. 3 and 4 are detail views showing the different parts of the brick.

In the drawings, A denotes the wall of a boiler-furnace having door-openings B B, provided with the arches C C. The adjacent ends of the arches are supported by the jambbrick D, which is approximately rectangular in shape, but has the beveled upper edges E, the bevel of the said upper edges tapering toward the rear, as fully shown in Fig. 2. The wall of the inner end of the brick is perforated, as shown at F, for-the purpose of permitting the circulation of air therethrough. The lower surface of the brick at its lower end is recessed to form the shoulder G, which is designed for the purpose of engaging a support and for the purpose of preventing displacement of the brick with relation to the support. The brick is hollow, as shown, 5 and is made of any suitable metal, preferably cast-iron, as I have found that cast-iron jambbricks will answer the requirement and will also prove less expensive than cast-steel.

In employing a brick of this character the 7 cost of applying a jamb-brick is reduced, as it only requires the placing of this single brick to accomplish the result, whereas as heretofore applied the jamb comprises a series of bricks which deteriorate rapidly owing to the action of the heat and have to be replaced, which replacing entails considerable cost and necessitates the shutting down of the furnace for a considerable period of time.

For convenience of description the terms M a 7 lower and mner (as glven to the brlck) refer to the brick in its applied position within the furnace-wall.

The construction, operation, and advantages will, it is thought, be fully understood from 5 the foregoing description, it being understood that various changes may be resorted to for successfully carrying the invention into practice without departing from the scope thereof.

Having fully described my invention, what 9 I claim as new, and desire to secure by Letters Patent, is

1. A jamb-brick comprising an angular hollow body having beveled edges, one end of said body being closed by a perforated wall.

2. A jamb-brick comprising an angular hollow body closed at one end, the brick having beveled edges tapering toward the closed enc.

3. A 'amb-ln'ick com risin an an ular I00 hollow body having the edges of one of its walls beveled, one end of said body being closed.

4. A jamb-brick comprising an angular hollow body, closed at one end, having a transverse shoulder on one of the walls near the closed end.

5. A jamb-brick comprising an angular hollow body having the edges of one of its walls beveled and having a shoulder on the opposite wall. e

6. A jarnb-brick comprising a hollow rectangular body having one end closed by a perforated wall, one of the walls of the brick having its edges beveled and provided with a shoulder on the opposite wall of the brick.

7. A jamb-brick comprising a hollow rectangular metal body having one end closed by a perforated wall, one of the walls of the his ALEXANDER GEARY.

mark

Witnesses:

JAcoB SHANER, MARY E. HAUER. 

